contrib: remove unnecessary strdup()

getopt() optarg points to argv memory, no need to dup those values,
fixes small leaks detected by clang-analyzer.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

contrib/ivshmem-client/main.c

@@ -53,7 +53,7 @@ ivshmem_client_parse_args(IvshmemClientArgs *args, int argc, char *argv[])
             break;
 
         case 'S': /* unix_sock_path */
-            args->unix_sock_path = strdup(optarg);
+            args->unix_sock_path = optarg;
             break;
 
         default:

contrib/ivshmem-server/main.c

@@ -92,15 +92,15 @@ ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[])
             break;
 
         case 'p': /* pid_file */
-            args->pid_file = strdup(optarg);
+            args->pid_file = optarg;
             break;
 
         case 'S': /* unix_socket_path */
-            args->unix_socket_path = strdup(optarg);
+            args->unix_socket_path = optarg;
             break;
 
         case 'm': /* shm_path */
-            args->shm_path = strdup(optarg);
+            args->shm_path = optarg;
             break;
 
         case 'l': /* shm_size */